list1 = ["a", "b"]

list1.append("c")

del list1[1]

print(list1)
for item in list1:
    print(item)

print(len(list1))
list2 = list1 + list1
print(list2)

list3 = ("1", "2")
print(list(list3))

key = "name"
map = {}
map[key] = "value"

for item in map:
    print(item, map[item])

print(map.get("age", 10))
